1173.33% is the change from 15 to 191
Calculation steps:
[( 191 - 15 ) ÷ 15] x 100 = 1173.33%
Formula
Percentage change = [(191 - 15) / 15] x 100
Subtract the new number by the original number
191 - 15 = 176
176 ÷ 15 = 11.733333333333333
11.733333333333333 x 100 = 1173.33%