-51.19% is the change from 545 to 266
Calculation steps:
[( 266 - 545 ) ÷ 545] x 100 = -51.19%
Formula
Percentage change = [(266 - 545) / 545] x 100
Subtract the new number by the original number
266 - 545 = -279
-279 ÷ 545 = -0.5119266055045871
-0.5119266055045871 x 100 = -51.19%