99.36% is the change from 312 to 622
Calculation steps:
[( 622 - 312 ) ÷ 312] x 100 = 99.36%
Formula
Percentage change = [(622 - 312) / 312] x 100
Subtract the new number by the original number
622 - 312 = 310
310 ÷ 312 = 0.9935897435897436
0.9935897435897436 x 100 = 99.36%