73.13% is the change from 387 to 670
Calculation steps:
[( 670 - 387 ) ÷ 387] x 100 = 73.13%
Formula
Percentage change = [(670 - 387) / 387] x 100
Subtract the new number by the original number
670 - 387 = 283
283 ÷ 387 = 0.7312661498708011
0.7312661498708011 x 100 = 73.13%