51.29% is the change from 620 to 938
Calculation steps:
[( 938 - 620 ) ÷ 620] x 100 = 51.29%
Formula
Percentage change = [(938 - 620) / 620] x 100
Subtract the new number by the original number
938 - 620 = 318
318 ÷ 620 = 0.5129032258064516
0.5129032258064516 x 100 = 51.29%