Problem with displaying percentile values in histogram

Question

I have I believe relatively simple problem but I fail to find a solution to what I am doing wrong. I have a df of 4m + rows such as:

        sum(bytes)
0       2.452768e+08
1       3.781524e+09
2       2.897799e+09
3       1.851381e+09
4       1.185865e+10
...     ...
4159349 2.515966e+08
4159350 1.719197e+06
4159351 7.499110e+05
4159352 9.540200e+04
4159353 2.457000e+03

dtype = sum(bytes) -> float64

I want to make a histogram with 10 bins here so I can see the percentile distribution of my values and check which value is say 10% top cut off value. I dud follwing:

import matplotlib.pyplot as plt

plt.hist(df['sum(bytes)'], bins=10)

and the output graph ended up like this:

Can anyone let me know what am I doing wrong? Thanks a lot!