-82.89% is the change from 526 to 90
Calculation steps:
[( 90 - 526 ) ÷ 526] x 100 = -82.89%
Formula
Percentage change = [(90 - 526) / 526] x 100
Subtract the new number by the original number
90 - 526 = -436
-436 ÷ 526 = -0.8288973384030418
-0.8288973384030418 x 100 = -82.89%