-78.64% is the change from 660 to 141
Calculation steps:
[( 141 - 660 ) ÷ 660] x 100 = -78.64%
Formula
Percentage change = [(141 - 660) / 660] x 100
Subtract the new number by the original number
141 - 660 = -519
-519 ÷ 660 = -0.7863636363636364
-0.7863636363636364 x 100 = -78.64%