-52.84% is the change from 545 to 257
Calculation steps:
[( 257 - 545 ) ÷ 545] x 100 = -52.84%
Formula
Percentage change = [(257 - 545) / 545] x 100
Subtract the new number by the original number
257 - 545 = -288
-288 ÷ 545 = -0.5284403669724771
-0.5284403669724771 x 100 = -52.84%