-43.09% is the change from 977 to 556
Calculation steps:
[( 556 - 977 ) ÷ 977] x 100 = -43.09%
Formula
Percentage change = [(556 - 977) / 977] x 100
Subtract the new number by the original number
556 - 977 = -421
-421 ÷ 977 = -0.43091095189355166
-0.43091095189355166 x 100 = -43.09%