-60.55% is the change from 550 to 217
Calculation steps:
[( 217 - 550 ) ÷ 550] x 100 = -60.55%
Formula
Percentage change = [(217 - 550) / 550] x 100
Subtract the new number by the original number
217 - 550 = -333
-333 ÷ 550 = -0.6054545454545455
-0.6054545454545455 x 100 = -60.55%