6440% is the change from 15 to 981
Calculation steps:
[( 981 - 15 ) ÷ 15] x 100 = 6440%
Formula
Percentage change = [(981 - 15) / 15] x 100
Subtract the new number by the original number
981 - 15 = 966
966 ÷ 15 = 64.4
64.4 x 100 = 6440%
Example