-49.03% is the change from 977 to 498
Calculation steps:
[( 498 - 977 ) ÷ 977] x 100 = -49.03%
Formula
Percentage change = [(498 - 977) / 977] x 100
Subtract the new number by the original number
498 - 977 = -479
-479 ÷ 977 = -0.49027635619242577
-0.49027635619242577 x 100 = -49.03%