-36.79% is the change from 280 to 177
Calculation steps:
[( 177 - 280 ) ÷ 280] x 100 = -36.79%
Formula
Percentage change = [(177 - 280) / 280] x 100
Subtract the new number by the original number
177 - 280 = -103
-103 ÷ 280 = -0.3678571428571429
-0.3678571428571429 x 100 = -36.79%