-56.4% is the change from 977 to 426
Calculation steps:
[( 426 - 977 ) ÷ 977] x 100 = -56.4%
Formula
Percentage change = [(426 - 977) / 977] x 100
Subtract the new number by the original number
426 - 977 = -551
-551 ÷ 977 = -0.563971340839304
-0.563971340839304 x 100 = -56.4%