-96.95% is the change from 623 to 19
Calculation steps:
[( 19 - 623 ) ÷ 623] x 100 = -96.95%
Formula
Percentage change = [(19 - 623) / 623] x 100
Subtract the new number by the original number
19 - 623 = -604
-604 ÷ 623 = -0.9695024077046549
-0.9695024077046549 x 100 = -96.95%