-98.07% is the change from 623 to 12
Calculation steps:
[( 12 - 623 ) ÷ 623] x 100 = -98.07%
Formula
Percentage change = [(12 - 623) / 623] x 100
Subtract the new number by the original number
12 - 623 = -611
-611 ÷ 623 = -0.9807383627608347
-0.9807383627608347 x 100 = -98.07%