-58.55% is the change from 550 to 228
Calculation steps:
[( 228 - 550 ) ÷ 550] x 100 = -58.55%
Formula
Percentage change = [(228 - 550) / 550] x 100
Subtract the new number by the original number
228 - 550 = -322
-322 ÷ 550 = -0.5854545454545454
-0.5854545454545454 x 100 = -58.55%