5053.33% is the change from 15 to 773
Calculation steps:
[( 773 - 15 ) ÷ 15] x 100 = 5053.33%
Formula
Percentage change = [(773 - 15) / 15] x 100
Subtract the new number by the original number
773 - 15 = 758
758 ÷ 15 = 50.53333333333333
50.53333333333333 x 100 = 5053.33%