90000% is the change from 1 to 901
Calculation steps:
[( 901 - 1 ) ÷ 1] x 100 = 90000%
Formula
Percentage change = [(901 - 1) / 1] x 100
Subtract the new number by the original number
901 - 1 = 900
900 ÷ 1 = 900
900 x 100 = 90000%
Example