900% is the change from 32 to 320
Calculation steps:
[( 320 - 32 ) ÷ 32] x 100 = 900%
Formula
Percentage change = [(320 - 32) / 32] x 100
Subtract the new number by the original number
320 - 32 = 288
288 ÷ 32 = 9
9 x 100 = 900%
Example