-64.61% is the change from 421 to 149
Calculation steps:
[( 149 - 421 ) ÷ 421] x 100 = -64.61%
Formula
Percentage change = [(149 - 421) / 421] x 100
Subtract the new number by the original number
149 - 421 = -272
-272 ÷ 421 = -0.6460807600950119
-0.6460807600950119 x 100 = -64.61%