-55.21% is the change from 605 to 271
Calculation steps:
[( 271 - 605 ) ÷ 605] x 100 = -55.21%
Formula
Percentage change = [(271 - 605) / 605] x 100
Subtract the new number by the original number
271 - 605 = -334
-334 ÷ 605 = -0.5520661157024793
-0.5520661157024793 x 100 = -55.21%