-90.94% is the change from 673 to 61
Calculation steps:
[( 61 - 673 ) ÷ 673] x 100 = -90.94%
Formula
Percentage change = [(61 - 673) / 673] x 100
Subtract the new number by the original number
61 - 673 = -612
-612 ÷ 673 = -0.9093610698365527
-0.9093610698365527 x 100 = -90.94%