-90.03% is the change from 331 to 33
Calculation steps:
[( 33 - 331 ) ÷ 331] x 100 = -90.03%
Formula
Percentage change = [(33 - 331) / 331] x 100
Subtract the new number by the original number
33 - 331 = -298
-298 ÷ 331 = -0.9003021148036254
-0.9003021148036254 x 100 = -90.03%