-27.8% is the change from 813 to 587
Calculation steps:
[( 587 - 813 ) ÷ 813] x 100 = -27.8%
Formula
Percentage change = [(587 - 813) / 813] x 100
Subtract the new number by the original number
587 - 813 = -226
-226 ÷ 813 = -0.2779827798277983
-0.2779827798277983 x 100 = -27.8%