-66.74% is the change from 929 to 309
Calculation steps:
[( 309 - 929 ) ÷ 929] x 100 = -66.74%
Formula
Percentage change = [(309 - 929) / 929] x 100
Subtract the new number by the original number
309 - 929 = -620
-620 ÷ 929 = -0.667384284176534
-0.667384284176534 x 100 = -66.74%