-51.91% is the change from 131 to 63
Calculation steps:
[( 63 - 131 ) ÷ 131] x 100 = -51.91%
Formula
Percentage change = [(63 - 131) / 131] x 100
Subtract the new number by the original number
63 - 131 = -68
-68 ÷ 131 = -0.5190839694656488
-0.5190839694656488 x 100 = -51.91%