6513.33% is the change from 15 to 992
Calculation steps:
[( 992 - 15 ) ÷ 15] x 100 = 6513.33%
Formula
Percentage change = [(992 - 15) / 15] x 100
Subtract the new number by the original number
992 - 15 = 977
977 ÷ 15 = 65.13333333333334
65.13333333333334 x 100 = 6513.33%