-86.18% is the change from 644 to 89
Calculation steps:
[( 89 - 644 ) ÷ 644] x 100 = -86.18%
Formula
Percentage change = [(89 - 644) / 644] x 100
Subtract the new number by the original number
89 - 644 = -555
-555 ÷ 644 = -0.8618012422360248
-0.8618012422360248 x 100 = -86.18%