-55.7% is the change from 623 to 276
Calculation steps:
[( 276 - 623 ) ÷ 623] x 100 = -55.7%
Formula
Percentage change = [(276 - 623) / 623] x 100
Subtract the new number by the original number
276 - 623 = -347
-347 ÷ 623 = -0.5569823434991974
-0.5569823434991974 x 100 = -55.7%