-54% is the change from 587 to 270
Calculation steps:
[( 270 - 587 ) ÷ 587] x 100 = -54%
Formula
Percentage change = [(270 - 587) / 587] x 100
Subtract the new number by the original number
270 - 587 = -317
-317 ÷ 587 = -0.5400340715502555
-0.5400340715502555 x 100 = -54%