-66.75% is the change from 421 to 140
Calculation steps:
[( 140 - 421 ) ÷ 421] x 100 = -66.75%
Formula
Percentage change = [(140 - 421) / 421] x 100
Subtract the new number by the original number
140 - 421 = -281
-281 ÷ 421 = -0.667458432304038
-0.667458432304038 x 100 = -66.75%