-35.33% is the change from 651 to 421
Calculation steps:
[( 421 - 651 ) ÷ 651] x 100 = -35.33%
Formula
Percentage change = [(421 - 651) / 651] x 100
Subtract the new number by the original number
421 - 651 = -230
-230 ÷ 651 = -0.3533026113671275
-0.3533026113671275 x 100 = -35.33%