79.81% is the change from 540 to 971
Calculation steps:
[( 971 - 540 ) ÷ 540] x 100 = 79.81%
Formula
Percentage change = [(971 - 540) / 540] x 100
Subtract the new number by the original number
971 - 540 = 431
431 ÷ 540 = 0.7981481481481482
0.7981481481481482 x 100 = 79.81%