-50.47% is the change from 428 to 212
Calculation steps:
[( 212 - 428 ) ÷ 428] x 100 = -50.47%
Formula
Percentage change = [(212 - 428) / 428] x 100
Subtract the new number by the original number
212 - 428 = -216
-216 ÷ 428 = -0.5046728971962616
-0.5046728971962616 x 100 = -50.47%