51.05% is the change from 621 to 938
Calculation steps:
[( 938 - 621 ) ÷ 621] x 100 = 51.05%
Formula
Percentage change = [(938 - 621) / 621] x 100
Subtract the new number by the original number
938 - 621 = 317
317 ÷ 621 = 0.5104669887278583
0.5104669887278583 x 100 = 51.05%