801% is the change from 100 to 901
Calculation steps:
[( 901 - 100 ) ÷ 100] x 100 = 801%
Formula
Percentage change = [(901 - 100) / 100] x 100
Subtract the new number by the original number
901 - 100 = 801
801 ÷ 100 = 8.01
8.01 x 100 = 801%
Example