-19.93% is the change from 547 to 438
Calculation steps:
[( 438 - 547 ) ÷ 547] x 100 = -19.93%
Formula
Percentage change = [(438 - 547) / 547] x 100
Subtract the new number by the original number
438 - 547 = -109
-109 ÷ 547 = -0.19926873857404023
-0.19926873857404023 x 100 = -19.93%