-34.99% is the change from 623 to 405
Calculation steps:
[( 405 - 623 ) ÷ 623] x 100 = -34.99%
Formula
Percentage change = [(405 - 623) / 623] x 100
Subtract the new number by the original number
405 - 623 = -218
-218 ÷ 623 = -0.34991974317817015
-0.34991974317817015 x 100 = -34.99%