-99.81% is the change from 528 to 1
Calculation steps:
[( 1 - 528 ) ÷ 528] x 100 = -99.81%
Formula
Percentage change = [(1 - 528) / 528] x 100
Subtract the new number by the original number
1 - 528 = -527
-527 ÷ 528 = -0.9981060606060606
-0.9981060606060606 x 100 = -99.81%