-14.1% is the change from 915 to 786
Calculation steps:
[( 786 - 915 ) ÷ 915] x 100 = -14.1%
Formula
Percentage change = [(786 - 915) / 915] x 100
Subtract the new number by the original number
786 - 915 = -129
-129 ÷ 915 = -0.14098360655737704
-0.14098360655737704 x 100 = -14.1%