-73.22% is the change from 915 to 245
Calculation steps:
[( 245 - 915 ) ÷ 915] x 100 = -73.22%
Formula
Percentage change = [(245 - 915) / 915] x 100
Subtract the new number by the original number
245 - 915 = -670
-670 ÷ 915 = -0.73224043715847
-0.73224043715847 x 100 = -73.22%