-79.78% is the change from 277 to 56
Calculation steps:
[( 56 - 277 ) ÷ 277] x 100 = -79.78%
Formula
Percentage change = [(56 - 277) / 277] x 100
Subtract the new number by the original number
56 - 277 = -221
-221 ÷ 277 = -0.7978339350180506
-0.7978339350180506 x 100 = -79.78%