-94.64% is the change from 634 to 34
Calculation steps:
[( 34 - 634 ) ÷ 634] x 100 = -94.64%
Formula
Percentage change = [(34 - 634) / 634] x 100
Subtract the new number by the original number
34 - 634 = -600
-600 ÷ 634 = -0.9463722397476341
-0.9463722397476341 x 100 = -94.64%