55.23% is the change from 344 to 534
Calculation steps:
[( 534 - 344 ) ÷ 344] x 100 = 55.23%
Formula
Percentage change = [(534 - 344) / 344] x 100
Subtract the new number by the original number
534 - 344 = 190
190 ÷ 344 = 0.5523255813953488
0.5523255813953488 x 100 = 55.23%