-77.46% is the change from 630 to 142
Calculation steps:
[( 142 - 630 ) ÷ 630] x 100 = -77.46%
Formula
Percentage change = [(142 - 630) / 630] x 100
Subtract the new number by the original number
142 - 630 = -488
-488 ÷ 630 = -0.7746031746031746
-0.7746031746031746 x 100 = -77.46%