-86.5% is the change from 526 to 71
Calculation steps:
[( 71 - 526 ) ÷ 526] x 100 = -86.5%
Formula
Percentage change = [(71 - 526) / 526] x 100
Subtract the new number by the original number
71 - 526 = -455
-455 ÷ 526 = -0.8650190114068441
-0.8650190114068441 x 100 = -86.5%