-18.91% is the change from 915 to 742
Calculation steps:
[( 742 - 915 ) ÷ 915] x 100 = -18.91%
Formula
Percentage change = [(742 - 915) / 915] x 100
Subtract the new number by the original number
742 - 915 = -173
-173 ÷ 915 = -0.18907103825136612
-0.18907103825136612 x 100 = -18.91%