50.3% is the change from 334 to 502
Calculation steps:
[( 502 - 334 ) ÷ 334] x 100 = 50.3%
Formula
Percentage change = [(502 - 334) / 334] x 100
Subtract the new number by the original number
502 - 334 = 168
168 ÷ 334 = 0.5029940119760479
0.5029940119760479 x 100 = 50.3%