67.13% is the change from 581 to 971
Calculation steps:
[( 971 - 581 ) ÷ 581] x 100 = 67.13%
Formula
Percentage change = [(971 - 581) / 581] x 100
Subtract the new number by the original number
971 - 581 = 390
390 ÷ 581 = 0.6712564543889845
0.6712564543889845 x 100 = 67.13%