-51.12% is the change from 268 to 131
Calculation steps:
[( 131 - 268 ) ÷ 268] x 100 = -51.12%
Formula
Percentage change = [(131 - 268) / 268] x 100
Subtract the new number by the original number
131 - 268 = -137
-137 ÷ 268 = -0.5111940298507462
-0.5111940298507462 x 100 = -51.12%