101.95% is the change from 307 to 620
Calculation steps:
[( 620 - 307 ) ÷ 307] x 100 = 101.95%
Formula
Percentage change = [(620 - 307) / 307] x 100
Subtract the new number by the original number
620 - 307 = 313
313 ÷ 307 = 1.019543973941368
1.019543973941368 x 100 = 101.95%