37.46% is the change from 670 to 921
Calculation steps:
[( 921 - 670 ) ÷ 670] x 100 = 37.46%
Formula
Percentage change = [(921 - 670) / 670] x 100
Subtract the new number by the original number
921 - 670 = 251
251 ÷ 670 = 0.3746268656716418
0.3746268656716418 x 100 = 37.46%