-29.98% is the change from 924 to 647
Calculation steps:
[( 647 - 924 ) ÷ 924] x 100 = -29.98%
Formula
Percentage change = [(647 - 924) / 924] x 100
Subtract the new number by the original number
647 - 924 = -277
-277 ÷ 924 = -0.29978354978354976
-0.29978354978354976 x 100 = -29.98%