-19.17% is the change from 767 to 620
Calculation steps:
[( 620 - 767 ) ÷ 767] x 100 = -19.17%
Formula
Percentage change = [(620 - 767) / 767] x 100
Subtract the new number by the original number
620 - 767 = -147
-147 ÷ 767 = -0.19165580182529335
-0.19165580182529335 x 100 = -19.17%