-56.66% is the change from 623 to 270
Calculation steps:
[( 270 - 623 ) ÷ 623] x 100 = -56.66%
Formula
Percentage change = [(270 - 623) / 623] x 100
Subtract the new number by the original number
270 - 623 = -353
-353 ÷ 623 = -0.5666131621187801
-0.5666131621187801 x 100 = -56.66%