-90.41% is the change from 417 to 40
Calculation steps:
[( 40 - 417 ) ÷ 417] x 100 = -90.41%
Formula
Percentage change = [(40 - 417) / 417] x 100
Subtract the new number by the original number
40 - 417 = -377
-377 ÷ 417 = -0.9040767386091128
-0.9040767386091128 x 100 = -90.41%