82.86% is the change from 531 to 971
Calculation steps:
[( 971 - 531 ) ÷ 531] x 100 = 82.86%
Formula
Percentage change = [(971 - 531) / 531] x 100
Subtract the new number by the original number
971 - 531 = 440
440 ÷ 531 = 0.8286252354048964
0.8286252354048964 x 100 = 82.86%