83.9% is the change from 528 to 971
Calculation steps:
[( 971 - 528 ) ÷ 528] x 100 = 83.9%
Formula
Percentage change = [(971 - 528) / 528] x 100
Subtract the new number by the original number
971 - 528 = 443
443 ÷ 528 = 0.8390151515151515
0.8390151515151515 x 100 = 83.9%