-66.25% is the change from 634 to 214
Calculation steps:
[( 214 - 634 ) ÷ 634] x 100 = -66.25%
Formula
Percentage change = [(214 - 634) / 634] x 100
Subtract the new number by the original number
214 - 634 = -420
-420 ÷ 634 = -0.6624605678233438
-0.6624605678233438 x 100 = -66.25%