-52.08% is the change from 866 to 415
Calculation steps:
[( 415 - 866 ) ÷ 866] x 100 = -52.08%
Formula
Percentage change = [(415 - 866) / 866] x 100
Subtract the new number by the original number
415 - 866 = -451
-451 ÷ 866 = -0.5207852193995381
-0.5207852193995381 x 100 = -52.08%