77% is the change from 387 to 685
Calculation steps:
[( 685 - 387 ) ÷ 387] x 100 = 77%
Formula
Percentage change = [(685 - 387) / 387] x 100
Subtract the new number by the original number
685 - 387 = 298
298 ÷ 387 = 0.7700258397932817
0.7700258397932817 x 100 = 77%