-19.47% is the change from 832 to 670
Calculation steps:
[( 670 - 832 ) ÷ 832] x 100 = -19.47%
Formula
Percentage change = [(670 - 832) / 832] x 100
Subtract the new number by the original number
670 - 832 = -162
-162 ÷ 832 = -0.19471153846153846
-0.19471153846153846 x 100 = -19.47%