-82.86% is the change from 525 to 90
Calculation steps:
[( 90 - 525 ) ÷ 525] x 100 = -82.86%
Formula
Percentage change = [(90 - 525) / 525] x 100
Subtract the new number by the original number
90 - 525 = -435
-435 ÷ 525 = -0.8285714285714286
-0.8285714285714286 x 100 = -82.86%