-50.28% is the change from 543 to 270
Calculation steps:
[( 270 - 543 ) ÷ 543] x 100 = -50.28%
Formula
Percentage change = [(270 - 543) / 543] x 100
Subtract the new number by the original number
270 - 543 = -273
-273 ÷ 543 = -0.5027624309392266
-0.5027624309392266 x 100 = -50.28%