-50.59% is the change from 852 to 421
Calculation steps:
[( 421 - 852 ) ÷ 852] x 100 = -50.59%
Formula
Percentage change = [(421 - 852) / 852] x 100
Subtract the new number by the original number
421 - 852 = -431
-431 ÷ 852 = -0.505868544600939
-0.505868544600939 x 100 = -50.59%