-81.65% is the change from 218 to 40
Calculation steps:
[( 40 - 218 ) ÷ 218] x 100 = -81.65%
Formula
Percentage change = [(40 - 218) / 218] x 100
Subtract the new number by the original number
40 - 218 = -178
-178 ÷ 218 = -0.8165137614678899
-0.8165137614678899 x 100 = -81.65%