-57.98% is the change from 921 to 387
Calculation steps:
[( 387 - 921 ) ÷ 921] x 100 = -57.98%
Formula
Percentage change = [(387 - 921) / 921] x 100
Subtract the new number by the original number
387 - 921 = -534
-534 ÷ 921 = -0.5798045602605864
-0.5798045602605864 x 100 = -57.98%