-50.95% is the change from 263 to 129
Calculation steps:
[( 129 - 263 ) ÷ 263] x 100 = -50.95%
Formula
Percentage change = [(129 - 263) / 263] x 100
Subtract the new number by the original number
129 - 263 = -134
-134 ÷ 263 = -0.5095057034220533
-0.5095057034220533 x 100 = -50.95%