-27.57% is the change from 555 to 402
Calculation steps:
[( 402 - 555 ) ÷ 555] x 100 = -27.57%
Formula
Percentage change = [(402 - 555) / 555] x 100
Subtract the new number by the original number
402 - 555 = -153
-153 ÷ 555 = -0.2756756756756757
-0.2756756756756757 x 100 = -27.57%