-97.65% is the change from 977 to 23
Calculation steps:
[( 23 - 977 ) ÷ 977] x 100 = -97.65%
Formula
Percentage change = [(23 - 977) / 977] x 100
Subtract the new number by the original number
23 - 977 = -954
-954 ÷ 977 = -0.9764585465711362
-0.9764585465711362 x 100 = -97.65%