81.91% is the change from 387 to 704
Calculation steps:
[( 704 - 387 ) ÷ 387] x 100 = 81.91%
Formula
Percentage change = [(704 - 387) / 387] x 100
Subtract the new number by the original number
704 - 387 = 317
317 ÷ 387 = 0.8191214470284238
0.8191214470284238 x 100 = 81.91%