-49.07% is the change from 428 to 218
Calculation steps:
[( 218 - 428 ) ÷ 428] x 100 = -49.07%
Formula
Percentage change = [(218 - 428) / 428] x 100
Subtract the new number by the original number
218 - 428 = -210
-210 ÷ 428 = -0.49065420560747663
-0.49065420560747663 x 100 = -49.07%