-50.57% is the change from 526 to 260
Calculation steps:
[( 260 - 526 ) ÷ 526] x 100 = -50.57%
Formula
Percentage change = [(260 - 526) / 526] x 100
Subtract the new number by the original number
260 - 526 = -266
-266 ÷ 526 = -0.5057034220532319
-0.5057034220532319 x 100 = -50.57%