689.8% is the change from 49 to 387
Calculation steps:
[( 387 - 49 ) ÷ 49] x 100 = 689.8%
Formula
Percentage change = [(387 - 49) / 49] x 100
Subtract the new number by the original number
387 - 49 = 338
338 ÷ 49 = 6.8979591836734695
6.8979591836734695 x 100 = 689.8%