57.52% is the change from 339 to 534
Calculation steps:
[( 534 - 339 ) ÷ 339] x 100 = 57.52%
Formula
Percentage change = [(534 - 339) / 339] x 100
Subtract the new number by the original number
534 - 339 = 195
195 ÷ 339 = 0.5752212389380531
0.5752212389380531 x 100 = 57.52%