-21.24% is the change from 777 to 612
Calculation steps:
[( 612 - 777 ) ÷ 777] x 100 = -21.24%
Formula
Percentage change = [(612 - 777) / 777] x 100
Subtract the new number by the original number
612 - 777 = -165
-165 ÷ 777 = -0.21235521235521235
-0.21235521235521235 x 100 = -21.24%