-86.08% is the change from 977 to 136
Calculation steps:
[( 136 - 977 ) ÷ 977] x 100 = -86.08%
Formula
Percentage change = [(136 - 977) / 977] x 100
Subtract the new number by the original number
136 - 977 = -841
-841 ÷ 977 = -0.8607983623336745
-0.8607983623336745 x 100 = -86.08%