-50.38% is the change from 526 to 261
Calculation steps:
[( 261 - 526 ) ÷ 526] x 100 = -50.38%
Formula
Percentage change = [(261 - 526) / 526] x 100
Subtract the new number by the original number
261 - 526 = -265
-265 ÷ 526 = -0.5038022813688213
-0.5038022813688213 x 100 = -50.38%