-43.81% is the change from 977 to 549
Calculation steps:
[( 549 - 977 ) ÷ 977] x 100 = -43.81%
Formula
Percentage change = [(549 - 977) / 977] x 100
Subtract the new number by the original number
549 - 977 = -428
-428 ÷ 977 = -0.43807574206755373
-0.43807574206755373 x 100 = -43.81%