23.6% is the change from 623 to 770
Calculation steps:
[( 770 - 623 ) ÷ 623] x 100 = 23.6%
Formula
Percentage change = [(770 - 623) / 623] x 100
Subtract the new number by the original number
770 - 623 = 147
147 ÷ 623 = 0.23595505617977527
0.23595505617977527 x 100 = 23.6%