-10.79% is the change from 241 to 215
Calculation steps:
[( 215 - 241 ) ÷ 241] x 100 = -10.79%
Formula
Percentage change = [(215 - 241) / 241] x 100
Subtract the new number by the original number
215 - 241 = -26
-26 ÷ 241 = -0.1078838174273859
-0.1078838174273859 x 100 = -10.79%