-18.36% is the change from 915 to 747
Calculation steps:
[( 747 - 915 ) ÷ 915] x 100 = -18.36%
Formula
Percentage change = [(747 - 915) / 915] x 100
Subtract the new number by the original number
747 - 915 = -168
-168 ÷ 915 = -0.18360655737704917
-0.18360655737704917 x 100 = -18.36%