-51.07% is the change from 977 to 478
Calculation steps:
[( 478 - 977 ) ÷ 977] x 100 = -51.07%
Formula
Percentage change = [(478 - 977) / 977] x 100
Subtract the new number by the original number
478 - 977 = -499
-499 ÷ 977 = -0.510747185261003
-0.510747185261003 x 100 = -51.07%