-80.07% is the change from 276 to 55
Calculation steps:
[( 55 - 276 ) ÷ 276] x 100 = -80.07%
Formula
Percentage change = [(55 - 276) / 276] x 100
Subtract the new number by the original number
55 - 276 = -221
-221 ÷ 276 = -0.8007246376811594
-0.8007246376811594 x 100 = -80.07%