-31.82% is the change from 550 to 375
Calculation steps:
[( 375 - 550 ) ÷ 550] x 100 = -31.82%
Formula
Percentage change = [(375 - 550) / 550] x 100
Subtract the new number by the original number
375 - 550 = -175
-175 ÷ 550 = -0.3181818181818182
-0.3181818181818182 x 100 = -31.82%