-1.81% is the change from 995 to 977
Calculation steps:
[( 977 - 995 ) ÷ 995] x 100 = -1.81%
Formula
Percentage change = [(977 - 995) / 995] x 100
Subtract the new number by the original number
977 - 995 = -18
-18 ÷ 995 = -0.018090452261306532
-0.018090452261306532 x 100 = -1.81%