-97.97% is the change from 591 to 12
Calculation steps:
[( 12 - 591 ) ÷ 591] x 100 = -97.97%
Formula
Percentage change = [(12 - 591) / 591] x 100
Subtract the new number by the original number
12 - 591 = -579
-579 ÷ 591 = -0.9796954314720813
-0.9796954314720813 x 100 = -97.97%