-21.6% is the change from 852 to 668
Calculation steps:
[( 668 - 852 ) ÷ 852] x 100 = -21.6%
Formula
Percentage change = [(668 - 852) / 852] x 100
Subtract the new number by the original number
668 - 852 = -184
-184 ÷ 852 = -0.215962441314554
-0.215962441314554 x 100 = -21.6%