-82.12% is the change from 660 to 118
Calculation steps:
[( 118 - 660 ) ÷ 660] x 100 = -82.12%
Formula
Percentage change = [(118 - 660) / 660] x 100
Subtract the new number by the original number
118 - 660 = -542
-542 ÷ 660 = -0.8212121212121212
-0.8212121212121212 x 100 = -82.12%