-32.04% is the change from 618 to 420
Calculation steps:
[( 420 - 618 ) ÷ 618] x 100 = -32.04%
Formula
Percentage change = [(420 - 618) / 618] x 100
Subtract the new number by the original number
420 - 618 = -198
-198 ÷ 618 = -0.32038834951456313
-0.32038834951456313 x 100 = -32.04%