-50.47% is the change from 634 to 314
Calculation steps:
[( 314 - 634 ) ÷ 634] x 100 = -50.47%
Formula
Percentage change = [(314 - 634) / 634] x 100
Subtract the new number by the original number
314 - 634 = -320
-320 ÷ 634 = -0.5047318611987381
-0.5047318611987381 x 100 = -50.47%