-63.64% is the change from 550 to 200
Calculation steps:
[( 200 - 550 ) ÷ 550] x 100 = -63.64%
Formula
Percentage change = [(200 - 550) / 550] x 100
Subtract the new number by the original number
200 - 550 = -350
-350 ÷ 550 = -0.6363636363636364
-0.6363636363636364 x 100 = -63.64%