-31.96% is the change from 948 to 645
Calculation steps:
[( 645 - 948 ) ÷ 948] x 100 = -31.96%
Formula
Percentage change = [(645 - 948) / 948] x 100
Subtract the new number by the original number
645 - 948 = -303
-303 ÷ 948 = -0.31962025316455694
-0.31962025316455694 x 100 = -31.96%