-31% is the change from 929 to 641
Calculation steps:
[( 641 - 929 ) ÷ 929] x 100 = -31%
Formula
Percentage change = [(641 - 929) / 929] x 100
Subtract the new number by the original number
641 - 929 = -288
-288 ÷ 929 = -0.310010764262648
-0.310010764262648 x 100 = -31%