-43.85% is the change from 545 to 306
Calculation steps:
[( 306 - 545 ) ÷ 545] x 100 = -43.85%
Formula
Percentage change = [(306 - 545) / 545] x 100
Subtract the new number by the original number
306 - 545 = -239
-239 ÷ 545 = -0.43853211009174314
-0.43853211009174314 x 100 = -43.85%