-1.71% is the change from 994 to 977
Calculation steps:
[( 977 - 994 ) ÷ 994] x 100 = -1.71%
Formula
Percentage change = [(977 - 994) / 994] x 100
Subtract the new number by the original number
977 - 994 = -17
-17 ÷ 994 = -0.01710261569416499
-0.01710261569416499 x 100 = -1.71%