-64.55% is the change from 550 to 195
Calculation steps:
[( 195 - 550 ) ÷ 550] x 100 = -64.55%
Formula
Percentage change = [(195 - 550) / 550] x 100
Subtract the new number by the original number
195 - 550 = -355
-355 ÷ 550 = -0.6454545454545455
-0.6454545454545455 x 100 = -64.55%