-18.42% is the change from 977 to 797
Calculation steps:
[( 797 - 977 ) ÷ 977] x 100 = -18.42%
Formula
Percentage change = [(797 - 977) / 977] x 100
Subtract the new number by the original number
797 - 977 = -180
-180 ÷ 977 = -0.1842374616171955
-0.1842374616171955 x 100 = -18.42%