-63.3% is the change from 902 to 331
Calculation steps:
[( 331 - 902 ) ÷ 902] x 100 = -63.3%
Formula
Percentage change = [(331 - 902) / 902] x 100
Subtract the new number by the original number
331 - 902 = -571
-571 ÷ 902 = -0.6330376940133038
-0.6330376940133038 x 100 = -63.3%