-97.09% is the change from 654 to 19
Calculation steps:
[( 19 - 654 ) ÷ 654] x 100 = -97.09%
Formula
Percentage change = [(19 - 654) / 654] x 100
Subtract the new number by the original number
19 - 654 = -635
-635 ÷ 654 = -0.9709480122324159
-0.9709480122324159 x 100 = -97.09%