6426.67% is the change from 15 to 979
Calculation steps:
[( 979 - 15 ) ÷ 15] x 100 = 6426.67%
Formula
Percentage change = [(979 - 15) / 15] x 100
Subtract the new number by the original number
979 - 15 = 964
964 ÷ 15 = 64.26666666666667
64.26666666666667 x 100 = 6426.67%