-20.19% is the change from 213 to 170
Calculation steps:
[( 170 - 213 ) ÷ 213] x 100 = -20.19%
Formula
Percentage change = [(170 - 213) / 213] x 100
Subtract the new number by the original number
170 - 213 = -43
-43 ÷ 213 = -0.20187793427230047
-0.20187793427230047 x 100 = -20.19%