-47.43% is the change from 506 to 266
Calculation steps:
[( 266 - 506 ) ÷ 506] x 100 = -47.43%
Formula
Percentage change = [(266 - 506) / 506] x 100
Subtract the new number by the original number
266 - 506 = -240
-240 ÷ 506 = -0.4743083003952569
-0.4743083003952569 x 100 = -47.43%