-68.21% is the change from 280 to 89
Calculation steps:
[( 89 - 280 ) ÷ 280] x 100 = -68.21%
Formula
Percentage change = [(89 - 280) / 280] x 100
Subtract the new number by the original number
89 - 280 = -191
-191 ÷ 280 = -0.6821428571428572
-0.6821428571428572 x 100 = -68.21%