-64.99% is the change from 877 to 307
Calculation steps:
[( 307 - 877 ) ÷ 877] x 100 = -64.99%
Formula
Percentage change = [(307 - 877) / 877] x 100
Subtract the new number by the original number
307 - 877 = -570
-570 ÷ 877 = -0.6499429874572406
-0.6499429874572406 x 100 = -64.99%