20.41% is the change from 534 to 643
Calculation steps:
[( 643 - 534 ) ÷ 534] x 100 = 20.41%
Formula
Percentage change = [(643 - 534) / 534] x 100
Subtract the new number by the original number
643 - 534 = 109
109 ÷ 534 = 0.20411985018726592
0.20411985018726592 x 100 = 20.41%