-66.3% is the change from 635 to 214
Calculation steps:
[( 214 - 635 ) ÷ 635] x 100 = -66.3%
Formula
Percentage change = [(214 - 635) / 635] x 100
Subtract the new number by the original number
214 - 635 = -421
-421 ÷ 635 = -0.662992125984252
-0.662992125984252 x 100 = -66.3%