-51.93% is the change from 543 to 261
Calculation steps:
[( 261 - 543 ) ÷ 543] x 100 = -51.93%
Formula
Percentage change = [(261 - 543) / 543] x 100
Subtract the new number by the original number
261 - 543 = -282
-282 ÷ 543 = -0.5193370165745856
-0.5193370165745856 x 100 = -51.93%