No, the percentage of 780 is not 67 percent but 78000%.
The increase is 5.405%
620/780 is 94.4%
780
780
35% of 780= 35% * 780= 0.35 * 780= 273
30% of 780= 30% * 780= 0.3 * 780= 234
45% of 780= 45% * 780= 0.45 * 780= 351
150% of 780= 150% * 780= 1.5 * 780= 1170
78% Make it into a fraction, 780/1000, then reduce it down to 39/50(get this by dividing by 20). Multiply that by 2 to get it to 100 for the decimal. 78/100 or .78. That would mean the answer is 78%
55% of 780 = 55% * 780 = 0.55 * 780 = 429
780