-65.56% is the change from 421 to 145
Calculation steps:
[( 145 - 421 ) ÷ 421] x 100 = -65.56%
Formula
Percentage change = [(145 - 421) / 421] x 100
Subtract the new number by the original number
145 - 421 = -276
-276 ÷ 421 = -0.6555819477434679
-0.6555819477434679 x 100 = -65.56%