-1.93% is the change from 623 to 611
Calculation steps:
[( 611 - 623 ) ÷ 623] x 100 = -1.93%
Formula
Percentage change = [(611 - 623) / 623] x 100
Subtract the new number by the original number
611 - 623 = -12
-12 ÷ 623 = -0.019261637239165328
-0.019261637239165328 x 100 = -1.93%