-20.15% is the change from 526 to 420
Calculation steps:
[( 420 - 526 ) ÷ 526] x 100 = -20.15%
Formula
Percentage change = [(420 - 526) / 526] x 100
Subtract the new number by the original number
420 - 526 = -106
-106 ÷ 526 = -0.20152091254752852
-0.20152091254752852 x 100 = -20.15%