98.72% is the change from 312 to 620
Calculation steps:
[( 620 - 312 ) ÷ 312] x 100 = 98.72%
Formula
Percentage change = [(620 - 312) / 312] x 100
Subtract the new number by the original number
620 - 312 = 308
308 ÷ 312 = 0.9871794871794872
0.9871794871794872 x 100 = 98.72%