-62.73% is the change from 550 to 205
Calculation steps:
[( 205 - 550 ) ÷ 550] x 100 = -62.73%
Formula
Percentage change = [(205 - 550) / 550] x 100
Subtract the new number by the original number
205 - 550 = -345
-345 ÷ 550 = -0.6272727272727273
-0.6272727272727273 x 100 = -62.73%