5613.33% is the change from 15 to 857
Calculation steps:
[( 857 - 15 ) ÷ 15] x 100 = 5613.33%
Formula
Percentage change = [(857 - 15) / 15] x 100
Subtract the new number by the original number
857 - 15 = 842
842 ÷ 15 = 56.13333333333333
56.13333333333333 x 100 = 5613.33%