-66.79% is the change from 280 to 93
Calculation steps:
[( 93 - 280 ) ÷ 280] x 100 = -66.79%
Formula
Percentage change = [(93 - 280) / 280] x 100
Subtract the new number by the original number
93 - 280 = -187
-187 ÷ 280 = -0.6678571428571428
-0.6678571428571428 x 100 = -66.79%