-77.85% is the change from 641 to 142
Calculation steps:
[( 142 - 641 ) ÷ 641] x 100 = -77.85%
Formula
Percentage change = [(142 - 641) / 641] x 100
Subtract the new number by the original number
142 - 641 = -499
-499 ÷ 641 = -0.7784711388455539
-0.7784711388455539 x 100 = -77.85%