21.5% is the change from 307 to 373
Calculation steps:
[( 373 - 307 ) ÷ 307] x 100 = 21.5%
Formula
Percentage change = [(373 - 307) / 307] x 100
Subtract the new number by the original number
373 - 307 = 66
66 ÷ 307 = 0.21498371335504887
0.21498371335504887 x 100 = 21.5%