-70.42% is the change from 409 to 121
Calculation steps:
[( 121 - 409 ) ÷ 409] x 100 = -70.42%
Formula
Percentage change = [(121 - 409) / 409] x 100
Subtract the new number by the original number
121 - 409 = -288
-288 ÷ 409 = -0.7041564792176039
-0.7041564792176039 x 100 = -70.42%