-74.57% is the change from 999 to 254
Calculation steps:
[( 254 - 999 ) ÷ 999] x 100 = -74.57%
Formula
Percentage change = [(254 - 999) / 999] x 100
Subtract the new number by the original number
254 - 999 = -745
-745 ÷ 999 = -0.7457457457457457
-0.7457457457457457 x 100 = -74.57%