-93.33% is the change from 600 to 40
Calculation steps:
[( 40 - 600 ) ÷ 600] x 100 = -93.33%
Formula
Percentage change = [(40 - 600) / 600] x 100
Subtract the new number by the original number
40 - 600 = -560
-560 ÷ 600 = -0.9333333333333333
-0.9333333333333333 x 100 = -93.33%