-51.16% is the change from 258 to 126
Calculation steps:
[( 126 - 258 ) ÷ 258] x 100 = -51.16%
Formula
Percentage change = [(126 - 258) / 258] x 100
Subtract the new number by the original number
126 - 258 = -132
-132 ÷ 258 = -0.5116279069767442
-0.5116279069767442 x 100 = -51.16%