-39.87% is the change from 913 to 549
Calculation steps:
[( 549 - 913 ) ÷ 913] x 100 = -39.87%
Formula
Percentage change = [(549 - 913) / 913] x 100
Subtract the new number by the original number
549 - 913 = -364
-364 ÷ 913 = -0.39868565169769987
-0.39868565169769987 x 100 = -39.87%