-74.39% is the change from 902 to 231
Calculation steps:
[( 231 - 902 ) ÷ 902] x 100 = -74.39%
Formula
Percentage change = [(231 - 902) / 902] x 100
Subtract the new number by the original number
231 - 902 = -671
-671 ÷ 902 = -0.7439024390243902
-0.7439024390243902 x 100 = -74.39%