-30.49% is the change from 925 to 643
Calculation steps:
[( 643 - 925 ) ÷ 925] x 100 = -30.49%
Formula
Percentage change = [(643 - 925) / 925] x 100
Subtract the new number by the original number
643 - 925 = -282
-282 ÷ 925 = -0.30486486486486486
-0.30486486486486486 x 100 = -30.49%