-27.05% is the change from 854 to 623
Calculation steps:
[( 623 - 854 ) ÷ 854] x 100 = -27.05%
Formula
Percentage change = [(623 - 854) / 854] x 100
Subtract the new number by the original number
623 - 854 = -231
-231 ÷ 854 = -0.27049180327868855
-0.27049180327868855 x 100 = -27.05%