72.26% is the change from 310 to 534
Calculation steps:
[( 534 - 310 ) ÷ 310] x 100 = 72.26%
Formula
Percentage change = [(534 - 310) / 310] x 100
Subtract the new number by the original number
534 - 310 = 224
224 ÷ 310 = 0.7225806451612903
0.7225806451612903 x 100 = 72.26%