5086.67% is the change from 15 to 778
Calculation steps:
[( 778 - 15 ) ÷ 15] x 100 = 5086.67%
Formula
Percentage change = [(778 - 15) / 15] x 100
Subtract the new number by the original number
778 - 15 = 763
763 ÷ 15 = 50.86666666666667
50.86666666666667 x 100 = 5086.67%