-98.59% is the change from 852 to 12
Calculation steps:
[( 12 - 852 ) ÷ 852] x 100 = -98.59%
Formula
Percentage change = [(12 - 852) / 852] x 100
Subtract the new number by the original number
12 - 852 = -840
-840 ÷ 852 = -0.9859154929577465
-0.9859154929577465 x 100 = -98.59%