-13.72% is the change from 977 to 843
Calculation steps:
[( 843 - 977 ) ÷ 977] x 100 = -13.72%
Formula
Percentage change = [(843 - 977) / 977] x 100
Subtract the new number by the original number
843 - 977 = -134
-134 ÷ 977 = -0.13715455475946775
-0.13715455475946775 x 100 = -13.72%