-93.92% is the change from 658 to 40
Calculation steps:
[( 40 - 658 ) ÷ 658] x 100 = -93.92%
Formula
Percentage change = [(40 - 658) / 658] x 100
Subtract the new number by the original number
40 - 658 = -618
-618 ÷ 658 = -0.939209726443769
-0.939209726443769 x 100 = -93.92%