37.79% is the change from 307 to 423
Calculation steps:
[( 423 - 307 ) ÷ 307] x 100 = 37.79%
Formula
Percentage change = [(423 - 307) / 307] x 100
Subtract the new number by the original number
423 - 307 = 116
116 ÷ 307 = 0.3778501628664495
0.3778501628664495 x 100 = 37.79%