-70.18% is the change from 550 to 164
Calculation steps:
[( 164 - 550 ) ÷ 550] x 100 = -70.18%
Formula
Percentage change = [(164 - 550) / 550] x 100
Subtract the new number by the original number
164 - 550 = -386
-386 ÷ 550 = -0.7018181818181818
-0.7018181818181818 x 100 = -70.18%