-81.22% is the change from 213 to 40
Calculation steps:
[( 40 - 213 ) ÷ 213] x 100 = -81.22%
Formula
Percentage change = [(40 - 213) / 213] x 100
Subtract the new number by the original number
40 - 213 = -173
-173 ÷ 213 = -0.812206572769953
-0.812206572769953 x 100 = -81.22%