-86.17% is the change from 528 to 73
Calculation steps:
[( 73 - 528 ) ÷ 528] x 100 = -86.17%
Formula
Percentage change = [(73 - 528) / 528] x 100
Subtract the new number by the original number
73 - 528 = -455
-455 ÷ 528 = -0.8617424242424242
-0.8617424242424242 x 100 = -86.17%