89900% is the change from 1 to 900
Calculation steps:
[( 900 - 1 ) ÷ 1] x 100 = 89900%
Formula
Percentage change = [(900 - 1) / 1] x 100
Subtract the new number by the original number
900 - 1 = 899
899 ÷ 1 = 899
899 x 100 = 89900%
Example