-64.85% is the change from 421 to 148
Calculation steps:
[( 148 - 421 ) ÷ 421] x 100 = -64.85%
Formula
Percentage change = [(148 - 421) / 421] x 100
Subtract the new number by the original number
148 - 421 = -273
-273 ÷ 421 = -0.6484560570071259
-0.6484560570071259 x 100 = -64.85%