-92.9% is the change from 634 to 45
Calculation steps:
[( 45 - 634 ) ÷ 634] x 100 = -92.9%
Formula
Percentage change = [(45 - 634) / 634] x 100
Subtract the new number by the original number
45 - 634 = -589
-589 ÷ 634 = -0.9290220820189274
-0.9290220820189274 x 100 = -92.9%