-96.78% is the change from 590 to 19
Calculation steps:
[( 19 - 590 ) ÷ 590] x 100 = -96.78%
Formula
Percentage change = [(19 - 590) / 590] x 100
Subtract the new number by the original number
19 - 590 = -571
-571 ÷ 590 = -0.9677966101694915
-0.9677966101694915 x 100 = -96.78%