-80.86% is the change from 977 to 187
Calculation steps:
[( 187 - 977 ) ÷ 977] x 100 = -80.86%
Formula
Percentage change = [(187 - 977) / 977] x 100
Subtract the new number by the original number
187 - 977 = -790
-790 ÷ 977 = -0.8085977482088025
-0.8085977482088025 x 100 = -80.86%