-84.95% is the change from 977 to 147
Calculation steps:
[( 147 - 977 ) ÷ 977] x 100 = -84.95%
Formula
Percentage change = [(147 - 977) / 977] x 100
Subtract the new number by the original number
147 - 977 = -830
-830 ÷ 977 = -0.849539406345957
-0.849539406345957 x 100 = -84.95%