36.57% is the change from 391 to 534
Calculation steps:
[( 534 - 391 ) ÷ 391] x 100 = 36.57%
Formula
Percentage change = [(534 - 391) / 391] x 100
Subtract the new number by the original number
534 - 391 = 143
143 ÷ 391 = 0.3657289002557545
0.3657289002557545 x 100 = 36.57%