-19.67% is the change from 915 to 735
Calculation steps:
[( 735 - 915 ) ÷ 915] x 100 = -19.67%
Formula
Percentage change = [(735 - 915) / 915] x 100
Subtract the new number by the original number
735 - 915 = -180
-180 ÷ 915 = -0.19672131147540983
-0.19672131147540983 x 100 = -19.67%