-84.79% is the change from 526 to 80
Calculation steps:
[( 80 - 526 ) ÷ 526] x 100 = -84.79%
Formula
Percentage change = [(80 - 526) / 526] x 100
Subtract the new number by the original number
80 - 526 = -446
-446 ÷ 526 = -0.8479087452471483
-0.8479087452471483 x 100 = -84.79%