-18.09% is the change from 995 to 815
Calculation steps:
[( 815 - 995 ) ÷ 995] x 100 = -18.09%
Formula
Percentage change = [(815 - 995) / 995] x 100
Subtract the new number by the original number
815 - 995 = -180
-180 ÷ 995 = -0.18090452261306533
-0.18090452261306533 x 100 = -18.09%