-70.12% is the change from 405 to 121
Calculation steps:
[( 121 - 405 ) ÷ 405] x 100 = -70.12%
Formula
Percentage change = [(121 - 405) / 405] x 100
Subtract the new number by the original number
121 - 405 = -284
-284 ÷ 405 = -0.7012345679012346
-0.7012345679012346 x 100 = -70.12%