-45.27% is the change from 486 to 266
Calculation steps:
[( 266 - 486 ) ÷ 486] x 100 = -45.27%
Formula
Percentage change = [(266 - 486) / 486] x 100
Subtract the new number by the original number
266 - 486 = -220
-220 ÷ 486 = -0.45267489711934156
-0.45267489711934156 x 100 = -45.27%