61.11% is the change from 306 to 493
Calculation steps:
[( 493 - 306 ) ÷ 306] x 100 = 61.11%
Formula
Percentage change = [(493 - 306) / 306] x 100
Subtract the new number by the original number
493 - 306 = 187
187 ÷ 306 = 0.6111111111111112
0.6111111111111112 x 100 = 61.11%