-62.87% is the change from 921 to 342
Calculation steps:
[( 342 - 921 ) ÷ 921] x 100 = -62.87%
Formula
Percentage change = [(342 - 921) / 921] x 100
Subtract the new number by the original number
342 - 921 = -579
-579 ÷ 921 = -0.6286644951140065
-0.6286644951140065 x 100 = -62.87%