-69.33% is the change from 913 to 280
Calculation steps:
[( 280 - 913 ) ÷ 913] x 100 = -69.33%
Formula
Percentage change = [(280 - 913) / 913] x 100
Subtract the new number by the original number
280 - 913 = -633
-633 ÷ 913 = -0.6933187294633077
-0.6933187294633077 x 100 = -69.33%