-86.24% is the change from 647 to 89
Calculation steps:
[( 89 - 647 ) ÷ 647] x 100 = -86.24%
Formula
Percentage change = [(89 - 647) / 647] x 100
Subtract the new number by the original number
89 - 647 = -558
-558 ÷ 647 = -0.8624420401854714
-0.8624420401854714 x 100 = -86.24%