-15.15% is the change from 845 to 717
Calculation steps:
[( 717 - 845 ) ÷ 845] x 100 = -15.15%
Formula
Percentage change = [(717 - 845) / 845] x 100
Subtract the new number by the original number
717 - 845 = -128
-128 ÷ 845 = -0.1514792899408284
-0.1514792899408284 x 100 = -15.15%