-90.73% is the change from 658 to 61
Calculation steps:
[( 61 - 658 ) ÷ 658] x 100 = -90.73%
Formula
Percentage change = [(61 - 658) / 658] x 100
Subtract the new number by the original number
61 - 658 = -597
-597 ÷ 658 = -0.9072948328267477
-0.9072948328267477 x 100 = -90.73%