-50% is the change from 52 to 26
Calculation steps:
[( 26 - 52 ) ÷ 52] x 100 = -50%
Formula
Percentage change = [(26 - 52) / 52] x 100
Subtract the new number by the original number
26 - 52 = -26
-26 ÷ 52 = -0.5
-0.5 x 100 = -50%
Example