-96.36% is the change from 852 to 31
Calculation steps:
[( 31 - 852 ) ÷ 852] x 100 = -96.36%
Formula
Percentage change = [(31 - 852) / 852] x 100
Subtract the new number by the original number
31 - 852 = -821
-821 ÷ 852 = -0.9636150234741784
-0.9636150234741784 x 100 = -96.36%