-68.7% is the change from 409 to 128
Calculation steps:
[( 128 - 409 ) ÷ 409] x 100 = -68.7%
Formula
Percentage change = [(128 - 409) / 409] x 100
Subtract the new number by the original number
128 - 409 = -281
-281 ÷ 409 = -0.687041564792176
-0.687041564792176 x 100 = -68.7%