-53.52% is the change from 540 to 251
Calculation steps:
[( 251 - 540 ) ÷ 540] x 100 = -53.52%
Formula
Percentage change = [(251 - 540) / 540] x 100
Subtract the new number by the original number
251 - 540 = -289
-289 ÷ 540 = -0.5351851851851852
-0.5351851851851852 x 100 = -53.52%