-76.66% is the change from 634 to 148
Calculation steps:
[( 148 - 634 ) ÷ 634] x 100 = -76.66%
Formula
Percentage change = [(148 - 634) / 634] x 100
Subtract the new number by the original number
148 - 634 = -486
-486 ÷ 634 = -0.7665615141955836
-0.7665615141955836 x 100 = -76.66%