-80.68% is the change from 207 to 40
Calculation steps:
[( 40 - 207 ) ÷ 207] x 100 = -80.68%
Formula
Percentage change = [(40 - 207) / 207] x 100
Subtract the new number by the original number
40 - 207 = -167
-167 ÷ 207 = -0.8067632850241546
-0.8067632850241546 x 100 = -80.68%