-81.87% is the change from 662 to 120
Calculation steps:
[( 120 - 662 ) ÷ 662] x 100 = -81.87%
Formula
Percentage change = [(120 - 662) / 662] x 100
Subtract the new number by the original number
120 - 662 = -542
-542 ÷ 662 = -0.8187311178247734
-0.8187311178247734 x 100 = -81.87%