42.88% is the change from 646 to 923
Calculation steps:
[( 923 - 646 ) ÷ 646] x 100 = 42.88%
Formula
Percentage change = [(923 - 646) / 646] x 100
Subtract the new number by the original number
923 - 646 = 277
277 ÷ 646 = 0.42879256965944273
0.42879256965944273 x 100 = 42.88%