-53.51% is the change from 669 to 311
Calculation steps:
[( 311 - 669 ) ÷ 669] x 100 = -53.51%
Formula
Percentage change = [(311 - 669) / 669] x 100
Subtract the new number by the original number
311 - 669 = -358
-358 ÷ 669 = -0.5351270553064275
-0.5351270553064275 x 100 = -53.51%