-49.17% is the change from 545 to 277
Calculation steps:
[( 277 - 545 ) ÷ 545] x 100 = -49.17%
Formula
Percentage change = [(277 - 545) / 545] x 100
Subtract the new number by the original number
277 - 545 = -268
-268 ÷ 545 = -0.4917431192660551
-0.4917431192660551 x 100 = -49.17%